Ultimate Anet A8 Sensor Mount (SN04-N)

thingiverse

This is a sensor mount for the SN04-N sensor which replaces the stock sensor mount from Anet or third parties. I found the 3mm acrylic plate mount was quite bendy and couldn't be firmly fixed. This design adds ribs which are not only anti-bend, but butt against the linear bearings to give a solid fixing. I also added nut recesses so you can adjust the sensor height more easily (without having to hold the nuts in place). I found that when placing the sensor in the same position as the stock mount, and with a firm fixing to the carriage, the autohome on X axis could jam as the sensor butts against the frame. To fix this I added 2mm of additional clearance, moving the sensor 2mm in the positive X direction. You might want to update the clearance in the Skynet or Marlin config if you want absolute accuracy, or you can edit the OpenSCAD so "Hole22OffsetX = Width - 20" to put it in the expected place (but watch your X axis for clearance).